Improvement in slides for extension-tables



' 1. KING."

Slides for Extension-Tables.

-N0. 144,276. Patented Nov.4,1873.

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FZTVIZQ UNITED STATES PATENT OEEIoE JEssE KING, or OSWEGO, NEW roan.

IMPROVEMENT IN SLIDES FOR EXTENSION-TABLES.

Specification forming part of Letters Patent No. 144,276, dated November 4, 1873 application filed September 6, 1873. I

To all whom it may concern:

Be it known that I, J EssE KING, of the city and county of Oswego and State of New York, have invented a new and Improved Slide for Extension-Tables, of which the following is a specification In the accompanying drawing, Figure 1 represents a top view of my improved slide for extensiontables; Fi g. 2, avertical longitudinal section of the same on the line a: as, Fig. 1, and Figs. 3 and 4 vertical transverse sections of the same on the lines y y and z 2, respectively.

Similar letters of reference indicate correspondin g parts.

The object of my invention is to so improve the slides for extensioii tables that the splitting of the slide-bars is prevented by transferring the strain to the center instead of the sides, and allowing the construction of the slide-bars in half the thickness of the slidebars in common use. My invention consists in arranging the ends of the slide-bars with arched slide-plates having short extensions, which are inclined toward the longitudinal axis and slide in similarly-inclined grooves of the adjacent slidebars.

I11 the drawing, A represents the slide-bars, which are provided, at diagonally-opposite ends, with arched grooves a, into which the slide-plates B, of corresponding shape, are inserted. Each slide B has projecting extensions B, which are inclined from the extremities of the arched part, at the points where the same leaves the slide-bar A, toward the longitudinal axis of the bars under a suitable angle to the same. A segmental piece, 0, of the bar A is thereby embraced by the arched slide B, and takes up the strain exerted thereon while the extensions B run in similarly-inclined grooves b of the adjacent bar. The grooves I) extend at both sides from that end of each bar above the arched slide B along the sides of the same to some distance from the opposite end, each bar A being connected to the adjacent one by two slides B running, respectively, in the adjacent grooves b of the slide-bars A A. A central longitudinal groove of one bar A, and a stop of the other, define the limit of the extension of the slide-bars in the usual manner, and prevent their coming apart.

Having thus described my invention, I claim as new and desire to secure by Letters Patent As an improvement in slides for extensiontables, the combination of slide-bars A, arched slide-plates B having extensions B running in inclined grooves b, and bars A, all arranged as and for the purposes described.

JESSE KING.

W'itnesses:

D. H. MARsI-I, G. (I. lVlAR-SH. 

